/*
  Copyright (c) 2011, Mikheev Rostislav
  Copyright (c) 2011, FreshFarsh team

  Steel Engine source code is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
/**
  @author Mikheev Rostislav <hacenator@gmail.com>
  @date 13.03.2011
  @brief OpenGL Camera class header file
*/

#ifndef STEEL_CAMERA_H_
#define STEEL_CAMERA_H_

#include "GL/glew.h"
#include "common.h"
#include "structures.h"

namespace _STEEL_NAMESPACE {

class Camera {
 public:
  Camera();
  ~Camera();

  void Init(int width, int height);
  void Apply();
  void Reset();

  void Translate(float dx, float dy);
  void MoveTo(float x, float y);

  float GetOffsetX();
  float GetOffsetY();
  float GetOffsetZ();

 private:
  bool _initialized; ///< camera initialized
  bool _modified; ///< camera position modified

  int _viewport_width;
  int _viewport_height;

  Matrix4x4f _matrix; ///< projection matrix
};

}

#endif // 
